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    Steel material for automobile chassis parts superior in fatigue characteristics and method of production of automobile chassis parts using the same
    3.
    发明授权
    Steel material for automobile chassis parts superior in fatigue characteristics and method of production of automobile chassis parts using the same 有权
    用于汽车底盘零件的钢材，疲劳特性优良，使用该材料的汽车底盘零件的生产方法

    公开(公告)号：US08828159B2

    公开(公告)日：2014-09-09

    申请号：US12310033

    申请日：2007-08-08

    申请人： Hideyuki Nakamura ,  Isao Anai ,  Yasushi Yamamoto ,  Takaaki Fukushi ,  Izuru Yamamoto ,  Masaaki Kondo ,  Satoru Shimazu

    发明人： Hideyuki Nakamura ,  Isao Anai ,  Yasushi Yamamoto ,  Takaaki Fukushi ,  Izuru Yamamoto ,  Masaaki Kondo ,  Satoru Shimazu

    IPC分类号： C21D9/08 ,  C21D8/10

    CPC分类号： B60G9/00 ,  B60G21/051 ,  B60G2200/20 ,  B60G2206/202 ,  B60G2206/72 ,  C21D9/00 ,  C21D9/08 ,  C21D9/50 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

    摘要： The present invention provides a steel material for automobile chassis parts which has high fatigue characteristics, does not require much cost for heat treatment, and further is superior in shapeability and a method of production of automobile chassis parts using this steel material, that is, one being a steel material to which Nb and Mo have been compositely added and having a difference 50 to 150 points between a Vicker's hardness of the center of plate thickness and a maximum value of Vicker's hardness within 0.5 mm from the surface after bending by a bending R of the plate outer surface of 2 to 5 times the plate thickness. The surface is high in hardness and the center part is low in hardness, so the fatigue characteristics and shapeability are superior. Note that if annealing under conditions giving a tempering parameter λ defined by λ=T(20+log(t)) of 14000 to 19000 (where T is the absolute temperature, t is the time (h), and the temperature rise is 660° C.), it is possible to relieve the internal stress and further improve the fatigue characteristics.

    摘要翻译： 本发明提供一种汽车底盘部件用钢材，其耐疲劳特性高，热处理成本低，成型性优良，使用该钢材的汽车底盘部件的制造方法也就是一种 作为将Nb和Mo复合添加的钢材，在板厚中心的维氏硬度与弯曲后的表面0.5mm以内的维氏硬度的最大值之间的差为50〜150点的弯曲R 的板外表面为板厚的2〜5倍。 表面硬度高，中心部硬度低，疲劳特性和成型性优异。 注意，如果在给出由λ= T（20 + log（t））定义的回火参数λ为14000至19000的条件下退火（其中T为绝对温度，t为时间（h），温度升高为660 °C），可以缓解内部应力，进一步提高疲劳特性。

    Method for producing cast iron gear
    5.
    发明授权
    Method for producing cast iron gear 失效
    铸铁齿轮的生产方法

    公开(公告)号：US5690756A

    公开(公告)日：1997-11-25

    申请号：US617282

    申请日：1996-03-18

    申请人： Yasuyuki Fujiwara ,  Izuru Yamamoto ,  Masazumi Onishi ,  Toshiaki Tanaka ,  Yoshinari Tsuchiya ,  Atsushi Danno

    发明人： Yasuyuki Fujiwara ,  Izuru Yamamoto ,  Masazumi Onishi ,  Toshiaki Tanaka ,  Yoshinari Tsuchiya ,  Atsushi Danno

    IPC分类号： B21H5/00 ,  B21H5/02 ,  C21D5/00 ,  C21D8/00 ,  C21D9/32 ,  C23C8/26

    CPC分类号： B21H5/02 ,  C21D8/005 ,  C21D9/32 ,  C21D5/00

    摘要： A method for producing cast iron gears includes the steps of heating a blank composed of cast iron and having a teeth forming part to such a temperature that at least the teeth forming part is at least austenitized, and hot rolling the teeth forming part of the blank by pressing projecting teeth of a rolling machine against the teeth forming part which is in a hot state and within an austenitized range, while cooling the blank, thereby generating a teeth part in the teeth forming part of the blank. Hot rolling with a low plastic deformation resistance prevents lowering of strength due to the exposure of graphite particles of cast iron and occurrence of quenching cracks and rolling cracks, and improves gear accuracy.

    摘要翻译： 一种生产铸铁齿轮的方法包括以下步骤：将由铸铁构成的坯料加热并具有齿形成部分，至少至少形成齿形部分至少奥氏体化的温度，以及热轧形成坯料部分的齿 通过在冷却坯料的同时将轧制机的突出齿压靠在处于热状态并在奥氏体化范围内的齿形成部分上，从而在形成坯料的一部分的齿中产生齿部。 具有低塑性变形抗力的热轧防止由于铸铁的石墨颗粒的暴露而引起的强度降低，并且发生淬火裂纹和滚动裂纹，并且提高齿轮精度。

    Carbamate derivatives and method for manufacture thereof
    7.
    发明授权
    Carbamate derivatives and method for manufacture thereof 失效
    氨基甲酸酯衍生物及其制造方法

    公开(公告)号：US4226883A

    公开(公告)日：1980-10-07

    申请号：US921750

    申请日：1978-07-03

    申请人： Izuru Yamamoto ,  Yohji Takahashi ,  Nobuo Kyomura

    发明人： Izuru Yamamoto ,  Yohji Takahashi ,  Nobuo Kyomura

    IPC分类号： A01N47/22 ,  C07C271/06 ,  A01N47/10

    CPC分类号： A01N47/22 ,  C07C271/06

    摘要： Novel carbamate derivatives and a method for the manufacture thereof are disclosed. The carbamate derivatives or insecticidal compositions containing such carbamate derivatives as the active component exhibit an outstanding insecticidal effect on the organophosphorus or carbamate resistant green rice leafhoppers (Nephotettix cincticeps Uhler).

    摘要翻译： 公开了新的氨基甲酸酯衍生物及其制备方法。 含有作为活性成分的氨基甲酸酯衍生物的氨基甲酸酯衍生物或杀虫剂组合物对有机磷或氨基甲酸酯抗性绿色水稻叶蝉（Nephotettix cincticeps Uhler）表现出突出的杀虫作用。